DOWNLOAD Sony DHC-EX880MD / DHC-MD717 / MDS-EX880 / MDS-MS717 Service Manual ↓ Size: 820.87 KB | Pages: 52 in PDF or view online for FREE

Model
DHC-EX880MD DHC-MD717 MDS-EX880 MDS-MS717
Pages
52
Size
820.87 KB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
dhc-ex880md-dhc-md717-mds-ex880-mds-ms717.pdf
Date

Sony DHC-EX880MD / DHC-MD717 / MDS-EX880 / MDS-MS717 Service Manual ▷ View online

MICROFILM
SERVICE MANUAL
MINI DISC DECK
AEP Model
UK Model
MDS-EX880
E Model
Tourist Model
MDS-MS717
Model Name Using Similar Mechanism
HCD-MD515
MD Mechanism Type
MDM-C1C
Optical Pidk-up Name
KMS-260A/J1N
SPECIFICATIONS
MDS-EX880/MS717
MDS-EX880/MS717 are the mini disc
deck section in DHC-EX880MD/MD717.
U.S and foreign patents licensed from Dolby
Laboratories Licensing Corporation.
Photo: MDS-MS717
– 2 –
This set can display the error history using the self disagnostic
function.
1.
OPERATING  THE  ERROR  HISTORY  MODE
All operations are performed using the 
[     
=
 
        SELECTOR      
+
 
        ]
dial and 
[PROGRAM]
 button.
1. Enter the test mode. (*1)
2. Turn the 
[     
=
 
        SELECTOR      
+
 
        ]
 dial and display “ERR
DP  MODE”.
3. Press the 
[ENTER/YES]
 button, therefor enter the error his-
tory mode and change the display “total rec”.
4. Press the 
[MENU/NO]
 button, therefor end the error history
mode and change the display “ERR  DP  MODE”.
(*1) See the “SECTION 4 TEST MODE” (page 11) for detail
of test mode.
2.
OPERATING  THE  DISPLAYED  HISTORYS
1. Turn the 
[     
=
 
        SELECTOR      
+
 
        ]
 dial and change the dis-
play of error history contents.
2. Press the 
[PROGRAM]
 button and display error history func-
tion.
3. Press the 
[PROGRAM]
 button again and back the display of
error history contents.
Table 1 shows the history items and description.
Table 1.
(*2) For the desciption of each error, refer to Table 1-1.
(*3) If err refresh is performed, the error history data are all erased.
Only when “OP Replacement” was executed, perform this
operation to clear the error history data, otherwise, never per-
form this operation.
Display
Description
(History items)
total rec
Recording time (total hours of laser high
power. About 1/5 of actual recording
time) is displayed with “r
h”.
total play
Playing time (total hours of actual play-
ing time. Pause is not counted) is dis-
played with “p
h”.
retry err
Total retry counts of recording (r) and
playing (p) are displayed with “r
p
”.
total err
Total error count is displayed with “total
”.
err history
Errors from last one “00” up to previous
10th error “09” are displayed with “0
E
”. (*2) (To select error No., use
[     
=
 
        SELECTOR      
+
 
        ]
 dial.)
er refresh?
err refresh (*3)
Press 
[REC IT]
 button, and “Complete!”
is displayed and the error history are all
erased.
Table 1-1.
Display
Description
(error No./code)
0  E00
No error
0  E01
Disc error PTOC does not read
0  E02
Disc error UTOC does not read
0  E03
Loading error
0  E04
Address does not read
0  E05
Out of FOK
0  E06
Focus does not work
0  E07
Retry of record
0  E08
Record retry error
0  E09
Retry of Playback
0  E0A
Playback retry error
SELF  DIAGNOSTIC  FUNCTION
– 3 –
The laser diode in the optical pick-up block may suffer electro-
static break-down because of the potential difference generated
by the charged electrostatic load, etc. on clothing and the human
body.
During repair, pay attention to electrostatic break-down and also
use the procedure in the printed matter which is included in the
repair parts.
The flexible board is easily damaged and should be handled with
care.
NOTES  ON  LASER  DIODE  EMISSION  CHECK
The laser beam on this model is concentrated so as to be focused
on the disc reflective surface by the objective lens in the optical
pick-up block. Therefore, when checking the laser diode emis-
sion, observe from more than 30 cm away from the objective lens.
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
Flexible Circuit Board Repairing
• Keep the temperature of the soldering iron around 270 ˚C during
repairing.
• Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
• Be careful not to apply force on the conductor when soldering or
unsoldering.
NOTES  ON  HANDLING  THE  OPTICAL  PICK-UP
BLOCK  OR  BASE  UNIT
SAFETY-RELATED  COMPONENT  WARNING!!
COMPONENTS  IDENTIFIED  BY  MARK  
!
  OR  DOTTED
LINE  WITH  MARK  
!
  ON  THE  SCHEMATIC  DIAGRAMS
AND  IN  THE  PARTS  LIST  ARE  CRITICAL  TO  SAFE
OPERATION.  REPLACE  THESE  COMPONENTS  WITH
SONY  PARTS  WHOSE  PART  NUMBERS  APPEAR  AS
SHOWN  IN  THIS  MANUAL  OR  IN  SUPPLEMENTS  PUB-
LISHED  BY  SONY.
SECTION  1
SERVICING  NOTES
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous ra-
diation exposure.
This appliance is classified as a CLASS 1 LASER product.
The CLASS 1 LASER PRODUCT MARKING is located on
the rear exterior.
Laser component in this product is capable of emitting radiation
exceeding the limit for Class 1.
The following caution label is located inside the unit.
TABLE  OF  CONTENTS
SELF  DIAGNOSTIC  FUNCTION
................................ 2
1.
SERVICING  NOTES
............................................... 3
2.
GENERAL
................................................................... 5
3.
DISASSEMBLY
......................................................... 6
4.
TEST  MODE
.............................................................. 11
5.
ELECTRICAL  ADJUSTMENTS
......................... 14
6.
DIAGRAMS
6-1. Block Diagram – MD SERVO Section – ....................... 19
6-2. Block Diagram – MAIN Section – ................................. 21
6-3. Printed Wiring Boards  – BD Section – ......................... 24
6-4. Schematic Diagram – BD Section – ............................... 27
6-5. Schematic Diagram – MAIN Section – .......................... 32
6-6. Printed Wiring Board – MAIN Section – ....................... 37
6-7. Printed Wiring Boards
– MOTOR/SENSOR Section – ....................................... 39
6-8. Schematic Diagram
– MOTOR/SENSOR Section – ....................................... 41
6-9. Printed Wiring Boards – PANEL Section – ................... 43
6-10. Schematic Diagram – PANEL Section – ........................ 45
6-11. IC Pin Function Description ........................................... 55
7.
EXPLODED  VIEWS
................................................ 65
8.
ELECTRICAL  PARTS  LIST
............................... 70
CAUTION
:
INVISIBLE    LASER    RADIATION    WHEN    OPEN    AND
INTERLOCKS   DEFEATED.    AVOID   EXPOSURE   TO   BEAM.
ADVARSEL :
USYNLIG   LASERSTRÅLING   VED   ÅBNING   NÅR 
SIKKERHEDSAFBRYDERE  ER  UDE  AF  FUNKTION.   UNDGÅ  UDSAETTELSE 
FOR  STRÅLING.
VORSICHT :
UNSICHTBARE  LASERSTRAHLUNG,  WENN 
ABDECKUNG  GEÖFFNET  UND  SICHEREITSVERRIEGELUNG 
ÜBERBRÜCKT.  NICHT  DEM  STRAHL  AUSSETZEN.
VARO
!
:
AVATTAESSA JA SUOJALUKITUS OHITETTAESSA OLET ALT-
TIINA  NÄKYMÄTTÖMÄLLE  LASERSÄTEILYLLE.  ÄLÄ  KATSO  SÄTEESEEN.
VARNING
:
OSYNLING LASERSTRÅLING NÄR DENNA  DEL ÄR ÖPPNAD
OCH SPÄRREN ÄR URKOPPLAD. BETRAKTA EJ STRÅLEN.
ADVERSEL :
USYNLIG  LASERSTRÅLING  NÅR  DEKSEL  ÅPNES  OG 
SIKKERHEDSLÅS BRYTES.  UNNGÅ EKSPONERING FOR STRÅLEN.
VIGYAZAT
! :
A  BURKOLAT  NYITÁSAKOR  LÁTHATATLAN  LÉZERSU-
GÁRVESZÉLY
!   KERÜLJE  A  BESUGÁRZÁST! 
– 4 –
POWER  SUPPLY  DURING  SERVICING
• As this set has not own power supply, it does not operate inde-
pendently. Therefore, during servicing, connect it to the Pre-Main
amplifier Unit (TA-EX880/MS717) of DHC-EX880MD/MD717.
Also, connect the Tuner Unit (ST-EX880/MS717) because the
POWER switch is not provided to the Pre-Main amplifier Unit
(TA-EX880/MS717).
If TA-EX880/MS717 and ST-EX880/MS717 are not available,
use the Power Feed Jig (PFJ-1).
In this case, turn on the POWER switch on the Power Feed Jig,
then press  
p button and
[DISPLAY]
button on the set simul-
taneously, so that the power is supplied.
Connection:
AGING  MODE
In the AGING mode, the MD operation can be checked.
• If an error occurs:
The aging operation stops.
• If no error occurs:
The aging operation continues repeatedly.
1. Operating Method for AGING Mode with the system power
turned on, press the
[POWER]
button while pressing the
[MENU/NO]
button and
[STEREO/MONO]
button on the Tuner
Unit (ST-EX880/MS717) simultaneously, so that the AGING
mode becomes active.
To exit from the AGING mode, press the
[POWER]
button,
and turn off the power.
Set
Pre-Main AMP
Unit
(TA-EX880/MS717)
Tuner Unit
(ST-EX880/MS717)
AC IN
AC IN jack
Connector cable (17P)
(attached to the set)
SYSTEM CONTROL terminal
SYSTEM CONTROL terminal
SYSTEM CONTROL terminal
AC plug cord
Power feed jig
(PFJ-1)
P707, 909
CDP/TC
CN308 (17P)
SYSTEM CONTROL terminal
Set
Connector cable (17P)
Page of 52
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Sony DHC-EX880MD / DHC-MD717 / MDS-EX880 / MDS-MS717 Service Manual ▷ Download

  • DOWNLOAD Sony DHC-EX880MD / DHC-MD717 / MDS-EX880 / MDS-MS717 Service Manual ↓ Size: 820.87 KB | Pages: 52 in PDF or view online for FREE
  • Here you can View online or download the Service Manual for the Sony DHC-EX880MD / DHC-MD717 / MDS-EX880 / MDS-MS717 in PDF for free, which will help you to disassemble, recover, fix and repair Sony DHC-EX880MD / DHC-MD717 / MDS-EX880 / MDS-MS717 Audio. Information contained in Sony DHC-EX880MD / DHC-MD717 / MDS-EX880 / MDS-MS717 Service Manual (repair manual) includes:
  • Disassembly, troubleshooting, maintenance, adjustment, installation and setup instructions.
  • Schematics, Circuit, Wiring and Block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Exploded View and Parts List.